Sherryl was born in Hawera in 1949 and raised in Normanby, a small town south of Mount Taranaki. She made her first book at age four, and carried on writing throughout her childhood and teenage years.

Sherryl trained in sign language as part of her work as a teacher's aide working with deaf children. In 1989 she was afflicted with Occupational Overuse Syndrome (OOS). After a slow recovery she was able to return to writing.

Books:

1981: The Silent One (Illustrations).

1983: Mouse (Illustrations).

1985: Mouse Monster (Illustrations).

1984: The Firewind and the Song.

1985: Matthew's Monster.

1986: Matthew's Monsters.

1988: No Problem Pomperoy!

1989: Kittens.

1989: The Wobbly Tooth.

1990: Rocco (published in the USA as A Time of Darkness).

1990: Babysitter Bear.

1991: The Juniper Game.

1991: The Wednesday Wizard (Denzil series, book one).

1992: Denzil's Dilemma (Denzil series, book two) (published in the US as Wizard for a Day).